The ISD1820 voice circuit is a popular choice for audio recording applications. One important consideration is the bias terminal of the microphone and the negative end of the 220uF capacitor. These can be connected to the RECLED terminal, which is represented by a dashed line in the schematic. When this connection is made, the RECLED terminal operates at a high level, which effectively cuts off the voltage and current supplied to the microphone. As a result, the entire circuit consumes almost no power. However, it's worth noting that this configuration does not support the pass-through mode, meaning that real-time audio playback or transmission will not work in this setup. This feature makes it ideal for low-power applications where energy efficiency is a priority.
Harvester Drive Wheel,Belt Drive Pulley,Power Take-Off Shaft,Agricultural Gearbox
Changzhou Youeryou Trading Co., Ltd. , https://www.farmpartssupplier.com